package com.ruoyi.framework.web.service;

import com.ruoyi.common.constant.CacheConstants;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.exception.user.*;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Component;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.entity.AppUser;
import com.ruoyi.common.core.domain.model.LoginUser;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.MessageUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.ip.IpUtils;
import com.ruoyi.framework.manager.AsyncManager;
import com.ruoyi.framework.manager.factory.AsyncFactory;
import com.ruoyi.framework.security.context.AuthenticationContextHolder;
import com.ruoyi.system.service.IAppUserService;
import com.ruoyi.system.service.ISysConfigService;

import java.util.HashMap;
import java.util.Map;

/**
 * App用户登录验证处理
 *
 * @author ruoyi
 */
@Component
public class AppLoginService {
    private final TokenService tokenService;

    private final AuthenticationManager authenticationManager;

    private final IAppUserService appUserService;

    private final ISysConfigService configService;

    private final RedisCache redisCache;

    public AppLoginService(TokenService tokenService, AuthenticationManager authenticationManager, IAppUserService appUserService,
                           ISysConfigService configService, RedisCache redisCache) {
        this.tokenService = tokenService;
        this.authenticationManager = authenticationManager;
        this.appUserService = appUserService;
        this.configService = configService;
        this.redisCache = redisCache;
    }

    /**
     * 登录验证
     *
     * @param username 用户名
     * @param password 密码
     * @return 结果
     */
    public String login(String username, String password, String loginType, String uuid, String code) {
        // 用户验证
        Authentication authentication;
        try {
            UsernamePasswordAuthenticationToken authenticationToken;
            Map<String, String> details = new HashMap<>(16);
            if (StringUtils.equals(loginType, Constants.LOGIN_TYPE_WX)) {
                // 登录前置校验
                loginPreCheck(username, "Anonymous");
                authenticationToken = new UsernamePasswordAuthenticationToken(username, "Anonymous");
                details.put("userType", Constants.APP_USER);
                details.put("loginType", Constants.LOGIN_TYPE_WX);
            } else {
                // 验证码校验
                validateCaptcha(username, code, uuid);
                // 登录前置校验
                loginPreCheck(username, password);
                authenticationToken = new UsernamePasswordAuthenticationToken(username, password);
                details.put("userType", Constants.APP_USER);
                details.put("loginType", Constants.LOGIN_TYPE_PASSWORD);
            }
            AuthenticationContextHolder.setContext(authenticationToken);
            authenticationToken.setDetails(details);
            authentication = authenticationManager.authenticate(authenticationToken);
        } catch (Exception e) {
            if (e instanceof BadCredentialsException) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
                throw new UserPasswordNotMatchException();
            } else {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, e.getMessage()));
                throw new ServiceException(e.getMessage());
            }
        } finally {
            AuthenticationContextHolder.clearContext();
        }
        AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_SUCCESS, MessageUtils.message("user.login.success")));
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        recordLoginInfo(loginUser.getUserId());
        // 生成token
        return tokenService.createToken(loginUser);
    }

    /**
     * 校验验证码
     *
     * @param username 用户名
     * @param code     验证码
     * @param uuid     唯一标识
     */
    public void validateCaptcha(String username, String code, String uuid) {
        boolean captchaEnabled = configService.selectCaptchaEnabled();
        if (captchaEnabled) {
            String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + StringUtils.nvl(uuid, "");
            String captcha = redisCache.getCacheObject(verifyKey);
            if (captcha == null) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.expire")));
                throw new CaptchaExpireException();
            }
            redisCache.deleteObject(verifyKey);
            if (!code.equalsIgnoreCase(captcha)) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.error")));
                throw new CaptchaException();
            }
        }
    }

    /**
     * 登录前置校验
     *
     * @param username 用户名
     * @param password 用户密码
     */
    public void loginPreCheck(String username, String password) {
        // 用户名或密码为空 错误
        if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password)) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("not.null")));
            throw new UserNotExistsException();
        }
        // IP黑名单校验
        String blackStr = configService.selectConfigByKey("sys.login.blackIPList");
        if (IpUtils.isMatchedIp(blackStr, IpUtils.getIpAddr())) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("login.blocked")));
            throw new BlackListException();
        }
    }

    /**
     * 记录登录信息
     *
     * @param userId 用户ID
     */
    public void recordLoginInfo(Long userId) {
        AppUser appUser = new AppUser();
        appUser.setId(userId);
        appUser.setUserLastip(IpUtils.getIpAddr());
        appUser.setUserLasttime(DateUtils.getNowDate());
        appUserService.updateAppUser(appUser);
    }
}